event: Remove in favor of sdeventplus

Use the new library provided to all openbmc projects instead of rolling
our own managed pointer.

Tested: Compiled

Change-Id: I4993d4340e0e0aa5898e73ef815baa81b0e8a2bc
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/Makefile.am b/Makefile.am
index 8fa771c..28b5178 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,11 +6,13 @@
 	-lstdc++fs \
 	$(PHOSPHOR_LOGGING_LIBS) \
 	$(SDBUSPLUS_LIBS) \
+	$(SDEVENTPLUS_LIBS) \
 	$(PHOSPHOR_DBUS_INTERFACES_LIBS) \
 	$(OPENPOWER_DBUS_INTERFACES_LIBS)
 libpower_la_CXXFLAGS = \
 	$(PHOSPHOR_LOGGING_CFLAGS) \
 	$(SDBUSPLUS_CFLAGS) \
+	$(SDEVENTPLUS_CFLAGS) \
 	$(PHOSPHOR_DBUS_INTERFACES_CFLAGS) \
 	$(OPENPOWER_DBUS_INTERFACES_CFLAGS)